Low-Temperature Belt Dryer
The DLT is not a drastic redesign. Our dryer development team, industry consultants, and industrial experts researched current dryers on the market and identified key areas in low-temperature dryers that would benefit from improvement. The result is a simplified, operator-friendly, low-temperature belt dryer that maximizes uptime – all done in a smaller footprint.
A low-temperature sludge dryer is like a gigantic pizza oven.”
Hiroko "Yoshi" Yoshida, Ph.D., R&D Director
Biosolids Expert + Environmental Process Specialist
The DLT is a closed-loop belt dryer that uses hot water as its primary heating source. The water loop is heated to ~190 °F; the head source is typically a boiler system but CHPs or turbines can be used. To transfer the heat from the hot water loop into the dryer, air is forced across heat exchangers into the dryer.
Problem: Typical low-temp dryer designs have heat recovery systems that are large, stand-alone, and located outside the dryer system. During cleaning, the entire dryer must stop to complete this maintenance task.
Solution: In the DLT’s Heat Recovery System, each module has an individual heat exchanger. If a single heat exchanger within the module requires cleaning, the DLT system continues to dry sludge. Only the individual module stops. It's a simple, one-person swap of the cartridge.